Australian Water Information Dictionary

Water status: Design rainfalls

/

Australian National Committee on Large Dams

This definition applies to:

The probability that a given rainfall total accumulated over a given duration will be exceeded in any one year.

Related: average recurrence interval (ARI)

This definition applies to:

Australian rainfall and runoff

This definition applies to:

The average or expected value of the periods between exceedances of a given rainfall total accumulated over a given duration. It is implicit in this definition that the periods between exceedances are generally random.

Related: annual exceedance probability (AEP)

This definition applies to:

computerised design IFD rainfall system

This definition applies to:

Appropriate for estimating probable maximum precipitation for durations up to six hours and for an area of less than 1000 square kilometres.

Related: probable maximum precipitation (PMP)

This definition applies to:

Appropriate for estimating probable maximum precipitation in regions of Australia where tropical storms are not the source of the greatest rainfall depths and where topographic influences vary markedly.

Related: probable maximum precipitation (PMP)

This definition applies to:

Appropriate for estimating probable maximum precipitation in regions of Australia affected by tropical storms.

Related: probable maximum precipitation (PMP)

This definition applies to:

intensity-frequency-duration

This definition applies to:

probable maximum flood

Related: probable maximum precipitation (PMP)

This definition applies to:

The greatest depth of precipitation for a given duration meteorologically possible for a given size storm area at a particular location at a particular time of the year, with no allowance made for long-term climatic trends.

Source: World Meteorological Organisation (1986). Manual for Estimation of Probable Maximum Precipitation. Second Edition. Operational Hydrology Report No. 1, WMO – No. 332, Geneva.

This definition applies to: